Pipe-wrench.



- 0. r. GLIDDBN.

PIPE WRBNGH. APPLICATION FILED FEB- 20, 1-903.

A fro/m5 Y.

PATENTED'JULY 2a, 1908. I

UNITED STATES PATENT OFFICE.

OSCAR F.'GLIDDEN, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR TO WOLVERINE BRASSWORKS, OF GRAND RAPIDS, MICHIGAN, A CORPORATION OF MICHIGAN.

PIPE-WRENCH.

Specification of Letters Patent.

Patented July 28, 1908.

Application filed February 20, 1908. Serial No. 416,877.

citizen of the United States, residing at Grand Rapids, in the county ofKent and State of Michigan, have invented new and useful Improvements inPipe-Wrenches, of which the following is a specification. I

This invention relates to a wrench intended particularly for handlingplated, polished, or smooth pipes, and operating to turn the samethrough the interposition of a fabric or some similar substance thatwill not scratch or mar the pipe between the operating wrench and thepipe to be turned, and its object is to construct a wrench of this kindand for this purpose, and in the most simple and efficient manner. Iaccomplish this obj ect by the construction shown in the accompanyingdrawings, in which Figure 1 is a side plan of the wrench complete whenin operative position with reference to the pipe which is shown incross-section. Fig.2 is an edge view of the same parts, and Fig. 3 is across-section on the line x-x of Fig. 2.

In these drawings the numeral 1 represents the handle or lever bar ofthe wrench. It is of any convenient size or shape, and I prefer to cutaway a portion of the metal as indicated in Fig. 1, in order to make thedevice lighter.

That end of the handle which in operation is the end adjacent to thepipe, is bent and extended in the form of a bent or curved toe,

as indicated by the numeral 2, and I prefer to make the external surfaceat this point upon a smooth and regular curve adapted to bear against(save for the interposed fabric) the surface of the pipe to be operatedu on.

This curved bearing surface is indicate by the numeral 3.

The central part of the lower end or foot of the handle is cut away sothat this central portion has a convex curved form ap roximatelyparallel to the curver3, whi e the lower portions of the sides of thehandle bar at the heel are expanded or extended into the wings 4 4.These wings have the slots 6 6 passing therethrough, and the bolt 5passes through these slots and is adapted to slide therein and rest atany desired position in the slots.

10 is a strap of fabric, leather, or other suitable materlal. around thebolt 5and bent back upon itself,

Its free end 8 is passed.

lying thereupon at the point 7 where it may be permanently fastened, ifdesired. The strap is then extended u wardly, forming a loop adapted toencircle t e pipe 11, and then downwardly, passing around the toe 2 andbetween the same and the part 8, that portion of the strap which thuslies between the toe and the part 8 being indicated by the numeral 9.The strap is then extended upwardly, lying along the exterior convexcurve of the lower part of the handle and terminating in the free end10.

The adjustability of the bolt 5 in the slots 6 6, which adjustment ispreferably at substantially a tangent to the eriphery of the pipe orother object engagerf by the wrench, not only rovides for accommodatingthe difierent t-Ficknesses of strap, as may be desired, but also permitscompensation for the varying size of the ipe, so that the most effectiveamount of binding surface may always be provided as between parts 8 and9 with reference to the action of the toe 2.

By this construction I have only two arts to my ipe wrench, itself,viz., the hand e lever an the adjustable bolt. Also, by the constructionand arrangement shown, the strap grips or binds upon the ipe for nearlyits entire circumference, and t e lever handle closely fitting as itdoes the pipe for a considerable distance along the curved part 3 whenforce is applied to the lever handle, almost the entire force tends torevolve the pipe upon its axis, and very little of such force tends topull the pipe away from such axis. At the same time, the form ofconstruction shown provides ,a very long gripping or binding surfacebetween the convex curve of the foot and the adjacent parts 8 and 9 ofthe strap, thus especially insuring against the slipping of the strapupon itself, more likely to take place if the binding was at one spotonly.

Having thus described my invention, what I claim to have invented anddesire to secure by Letters Patent, is

A wrench of the class described comprising a toe portion provided with aconcaved surface adapted to conform approximately to the curvature ofthe object to be engaged by the wrench, wings arranged at opposite sidesof the toe portion and projecting rearwardly therefrom, a bolt extendingtransversely between said wings and s aced away from the rear or convexside of t e toe portion, and a flexible strap looped around said boltand adapted to surround a pi e or other object, a In testimony whereof Ihave hereunto set portion of the strap lying etween the periphmy hand inpresence of two subscribing witery of said object and the concavesurface of nesses.

the toe portion and another portion of the OSCAR F. GLIDDEN. 5 strap, aswell as the loop thereof, lying be- Witnesses:

tween said bolt and the convex side of the MARY S. TooKER,

toe portion. NlARY ScHULTE.

